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Chapter
Optimal Integration of Binary Current Lead and Cryocooler
An optimal integration of a binary current lead and a two-stage cryocooler has been analytically sought to minimize the required refrigerator power. The binary current lead is a series combination of a normal ...
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Chapter
Channel Heat Transfer in He I - Steady State Orientation Dependence
Experimental investigations of liquid helium heat transfer from a channel configuration are reported. Four model test sections are constructed each consisting of a rectangular cross section channel 127 mm in l...
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Chapter
Boiling In Saturated He II
In the present set of experiments, boiling regimes in saturated He II confined to a vertical rectangular (1 × 10 × 114 mm) channel are studied. These experiments are intended to model a cooling channel in a su...
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Chapter
Stability Measurements of a Superconductor Cooled By a Two-Dimensional Channel of Helium II
This report presents measurements on the stability of a He II cooled superconductor. The conductor is helically wound in a phenolic coil support and is cooled by a channel of He II which allows for heat transf...
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Chapter
Steady State Forced Convection Heat Transfer in He II
A study of forced convection heat transfer in superfluid helium (He II) is initiated to better understand the physical behavior of this process and to compare it with the more familiar He II heat transfer mech...
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Chapter
A Thin Film Amorphous Semiconductor Temperature Sensor
Thin film temperature sensors for use in the liquid helium temperature range have been fabricated from an amorphous semiconductor-metal alloy of germanium and copper. The amorphous material (0.5 – 1.0 µm thick...